Your yoshiness level is how similar you are to Yoshi. Having a high yoshiness level requires either looking similar or having similar attributes to Yoshi, as well as having a personality similar to Yoshi.
"My yoshiness is off the charts today"
"Wait you're not in a mascot costume?"
A trip to a grocery store, convenience store, or gas station for the sole purpose of buying an excessive amount of junk food and sugary drinks, usually with friends. A chud run often happens late at night and ends with everyone involved hating themselves afterwards.